Fabio Pupin / Iberian worm lizard, (Blanus cinereus), emerging from sandy soil, Spain, October . Non-ex.

Fabio Pupin / Iberian worm lizard, (Blanus cinereus), Spain, September . Non-ex.

Fabio Pupin / Iberian worm lizard, (Blanus cinereus), close-up of the head, Spain, September . Non-ex.

Barry Mansell / Florida worm lizard (Rhineura floridana) Florida ,USA, February.

Stephen Dalton / Mediterranean worm lizard (Blanus cinereus) head portrait, Extremadura, Spain

Stephen Dalton / Mediterranean worm lizard (Blanus cinereus) Extremadura, Spain

Stephen Dalton / Mediterranean worm lizard (Blanus cinereus) Extremadura, Spain

Roland Seitre / Red Worm Lizard (Amphisbaena alba) native to South America.

Piotr Naskrecki / Swynnerton's Worm Lizard (Chirindiaáswynnertoni), Gorongosa National Park, Mozambique

Piotr Naskrecki / Swynnerton's Worm Lizard (Chirindiaáswynnertoni), Gorongosa National Park, Mozambique

Chris Mattison / Spanish amphisbaenian / worm-lizard (Blanus cinereus) captive from Portugal and Spain.

Chris Mattison / Spanish amphisbaenian / worm-lizard (Blanus cinereus) captive from Portugal and Spain.